I have a screen with 2 dropdowns; Commodity and Variety. Variety depends on commodity. Variety can have duplicate names, belonging to different commodities.

I have set this up as normal, fetching the full variety list, binding it to the selected commodity via the ParentBinding configuration.

Everything has been working fine, the dropdown only shows the varieties for the selected commodity.

However, when a user types in the field and lets the option auto-complete, sometimes a variety is selected that is not in the dropdown list. This is only possible when the name matches a variety that is available in the list. 

This happens sometimes and results in that a variety with the correct name but belonging to a different commodity is selected. This is undesirable and as a result fails the validations we have set up. 

Is there a workaround for this, or any fixes on our end?

Thanks in advance

P.S. I should mention that the variety fetch is set up, so that for each parent commodity, there is an empty variety option. This is to ensure the user can select an empty variety, regardless of which commodity they have selected as this field is not mandatory.

Screenshot of the (partial) result of the GetVarieties data action, empty values are inserted for all parent commodities. Note the duplicate Durum, belonging to different parent commodities.